S9S12G64F0CLFR Freescale Semiconductor, S9S12G64F0CLFR Datasheet - Page 264
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S9S12G64F0CLFR
Manufacturer Part Number
S9S12G64F0CLFR
Description
16-bit Microcontrollers - MCU S12 Core,64K FLASH AU
Manufacturer
Freescale Semiconductor
Datasheet
1.S9S12G96F0CLL.pdf
(1292 pages)
Specifications of S9S12G64F0CLFR
Rohs
yes
Core
S12
Processor Series
MC9S12G
Data Bus Width
16 bit
Maximum Clock Frequency
1 MHz
Program Memory Size
64 KB
Data Ram Size
8 KB
On-chip Adc
Yes
Operating Supply Voltage
3.13 V to 5.5 V
Operating Temperature Range
- 40 C to + 125 C
Package / Case
LQFP-48
Mounting Style
SMD/SMT
A/d Bit Size
10 bit, 12 bit
A/d Channels Available
12
Interface Type
SPI
Maximum Operating Temperature
+ 125 C
Minimum Operating Temperature
- 40 C
Number Of Programmable I/os
40
Number Of Timers
8
Program Memory Type
Flash
Supply Voltage - Max
5.5 V
Supply Voltage - Min
3.13 V
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Reference Voltage Attenuator (RVAV1)
4.7
The RVA is a prescaler for the ADC reference voltage. If the attenuation is turned off the resistive divider
is disconnected from VSSA, VRH_INT is connected to VRH and VRL_INT is connected to VSSA. In this
mode the attenuation is bypassed and the resistive divider does not draw current.
If the attenuation is turned on the resistive divider is connected to VSSA, VRH_INT and VRL_INT are
connected to intermediate voltage levels:
The attenuated reference voltage difference (VRH_INT - VRL_INT) equals 50% of the input reference
voltage difference (VRH - VSSA). With reference voltage attenuation the resolution of the ADC is
improved by a factor of 2.
266
Functional Description
In attenuation mode the maximum ADC clock is reduced. Please refer to the
conditions in appendix A “ATD Accuracy”, table “ATD Conversion
Performance 5V range, RVA enabled”.
VRH_INT = 0.9 * (VRH - VSSA) + VSSA
VRL_INT = 0.4 * (VRH - VSSA) + VSSA
MC9S12G Family Reference Manual,
NOTE
Rev.1.23
Freescale Semiconductor
Eqn. 4-1
Eqn. 4-2
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